import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import pojo.User;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

/**
 * mybatis快速入门代码
 */

public class MybatisDemo {
    public static void main(String[] args) throws IOException {
        //1. 加载mybatis的核心配置文件 获取SqlSessionFactory
        String resource = "mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);


        //2.获取sqlsession对象 用它来执行sql
        SqlSession sqlSession = sqlSessionFactory.openSession();

        //3 执行sql
        List<User> users = sqlSession.selectList("test.selectAll");

        System.out.println(users);

        sqlSession.close();
    }
}
